| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
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| Aristolochiaceae | Hexastylis arifolia | Little Brown Jug, Arrowleaf Heartleaf, Pigs | In a wide variety of dry to mesic forests. | Se. VA, sw. VA, se. KY, se. TN, and n. AL south to se. GA (Carter, Baker, & Morris 2009), Panhandle FL, s. MS, and se. LA, primarily on the Coastal Plain and Piedmont; recently reported for far sw. TN, in the Mississippi Embayment of the Coastal Plain (Trently 2017). | 
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| Aristolochiaceae | Hexastylis callifolia | Gulf Little Brown Jug | Mesic forests. | Sw. GA and Panhandle FL west to se. LA, in the lower East Gulf Coastal Plain. | 
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| Aristolochiaceae | Hexastylis chueyi | Chuey’s Heartleaf | Shaded slopes with exposed rock near streams and rivers, on acidic rocks. | Apparently endemic to the Blue Ridge / Piedmont escarpment of c. VA (Albemarle, Amherst, Nelson, and other nearby counties), where it is locally fairly common; and disjunct to Greene County, TN. | 
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| Aristolochiaceae | Hexastylis contracta | Mountain Heartleaf | On acidic soils in mesic to dry deciduous forests with Kalmia latifolia and Rhododendron maximum. | Endemic to the Cumberland Plateau of TN (Chester, Wofford, & Kral 1997) and KY, with disjunct populations in the Blue Ridge of NC and in the Ridge and Valley of sw. VA (Washington County) (J. Townsend, pers.comm. 2006). | 
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| Aristolochiaceae | Hexastylis finzelii | Finzel's Heartleaf | Rocky, submesic forests. | Endemic to Marshall County, AL (as far as is known). | 
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| Aristolochiaceae | Hexastylis harperi | Harper's Heartleaf | Bogs, acid hammocks. | C. GA, c. AL, and ne. MS, south and west of (and allopatric from) H. shuttleworthii; it approaches SC and should be sought there (Gaddy 1987b) | 
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| Aristolochiaceae | Hexastylis heterophylla | Variable-leaf Heartleaf | Slopes and bluffs in xeric to mesic forests, usually associated with Kalmia latifolia. | A broad Southern Appalachian endemic: w. VA and WV south through e. KY, ne. TN, and w. NC to nw. SC, n. GA, and n. AL. | 
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| Aristolochiaceae | Hexastylis lewisii | Lewis's Heartleaf | Upland forests (pine or oak), pocosin ecotones. | Endemic to the Piedmont of VA and the Piedmont and Coastal Plain of NC. | 
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| Aristolochiaceae | Hexastylis minor | Little Heartleaf | Upland or moist forests. | Endemic to the Piedmont and adjacent Coastal Plain and Mountains of nc. VA, NC, and nc. SC. | 
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| Aristolochiaceae | Hexastylis naniflora | Dwarf-flower Heartleaf | In mesic to dry, acidic, sandy loam on bluffs, ravines, slopes, and ridges in deciduous forests, frequently associated with Kalmia latifolia. | Endemic to the upper Piedmont of s. NC and n. SC. | 
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| Aristolochiaceae | Hexastylis rhombiformis | French Broad Heartleaf | In deciduous forests on sandy river bluffs or in ravines with Kalmia latifolia and Rhododendron maximum. | Endemic to the southern Blue Ridge of NC and SC, known only from Henderson, Polk, Buncombe, and Transylvania counties, NC, and Greenville County, SC. | 
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| Aristolochiaceae | Hexastylis rollinsiae | Rollins's Heartleaf | Sandy mixed woodlands. | Native distribution speculative: Baldwin County, and perhaps also from Coffee County, AL. | 
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| Aristolochiaceae | Hexastylis rosei | Rose's Heartleaf | Moist acid forests under Rhododendron maximum. | Blue Ridge Escarpment, so far as is know endemic to Caldwell County, NC. Two populations are now known (Schaner 2021). | 
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| Aristolochiaceae | Hexastylis ruthii | Appalachian Little Brown Jug | Upland acidic forests, ultramafic outcrop barrens, calcareous forests. | A Southern Appalachian endemic: sw. VA, se. KY, w. NC, e. TN, n. AL, and n. GA. | 
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| Aristolochiaceae | Hexastylis shuttleworthii | Large-flower Heartleaf | Acidic soils in deciduous and deciduous-coniferous forests, often along creeks under Rhododendron maximum. | Endemic to the Southern Appalachians: W. NC and e. TN to nw. SC, n. GA, and ne. AL; previous reports of H. shuttleworthii for VA and WV are apparently based on large-flowered individuals of H. heterophylla (J. Townsend, pers. comm. 2008). | 
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| Aristolochiaceae | Hexastylis sorriei | Sandhill Heartleaf | Seepage bogs, pocosins, typically in association with Osmundastrum cinnamomeum, Sarracenia rubra, and Sphagnum spp. | Endemic to Sandhills region of NC and SC | 
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| Aristolochiaceae | Hexastylis species 1 | Buck Creek Heartleaf | Serpentine barrens. | Endemic to the Buck Creek Serpentine Barren, Clay County, NC. | 
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| Aristolochiaceae | Hexastylis species 5 | Catawba Heartleaf | Dryish to moist bluffs with heaths. | Wc. Piedmont of NC and escarpment region. | 
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| Aristolochiaceae | Hexastylis speciosa | Alabama Heartleaf, Alabama Ginger | Shaded forests along streams and bogs. | Endemic to a small area in central AL (Autauga, Chilton, and Elmore counties, north of Montgomery). | 
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| Aristolochiaceae | Hexastylis virginica | Virginia Heartleaf | Upland forests. | A relatively widespread species, occurring throughout NC and VA, extending west into WV, e. KY, and ne. TN (Chester, Wofford, & Kral 1997); alleged to have also been collected in 1897 in Putnam County, FL (ne. FL) (Wunderlin & Hansen 2015). | 
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